MC68HC000EI20 Freescale Semiconductor, MC68HC000EI20 Datasheet - Page 63
MC68HC000EI20
Manufacturer Part Number
MC68HC000EI20
Description
IC MPU 16BIT 20MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC000IEI16.pdf
(189 pages)
Specifications of MC68HC000EI20
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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Figures 5-19, 5-20, and 5-21 applies to all processors using 3-wire bus arbitration. Figures
5-22, 5-23, and 5-24 applies to all processors using 2-wire bus arbitration.
MOTOROLA
G = Bus Grant
R = Bus Request Internal
A = Bus Grant Acknowledge Internal
T = Three-state Control to Bus Control Logic
X = Don't Care
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
Figure 5-18. Bus Arbitration Unit State Diagrams
RA
X
STATE 2
GT
R
XX
STATE 1
Freescale Semiconductor, Inc.
GT
For More Information On This Product,
GT
GT
(a) 3-Wire Bus Arbitration
RA
(b) 2-Wire Bus Arbitration
XA
RA
R
RA
R
Go to: www.freescale.com
1
RA
STATE 3
STATE 0
R
GT
GT
GT
RA
GT
GT
RA
RA
R
RA
RA
R+A
XA
X
XX
R
1
STATE 4
GT
GT
GT
Notes:
RX
1. State machine will not change if
2. The address bus will be placed in
BUS ARBITRATION CONTROL.
the bus is S0 or S1. Refer to
the high-impedance state if T is
asserted and AS is negated.
RA
5.2.3.
5- 17
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